{"product_id":"hygienespeicher-mit-2-warmetauschern","title":"Hygienic storage with 2 heat exchangers","description":"\u003ch2\u003eFresh water – FKS hygienic combination storage tank: Legionella-safe drinking water heating\u003c\/h2\u003e  \u003ch3\u003eProduct overview\u003c\/h3\u003e  \u003cp\u003eThe FKS fresh water combination storage tank offers legionella-safe domestic hot water heating thanks to an integrated stainless steel corrugated pipe and combines the advantages of a boiler and an instantaneous water heater. It is suitable for operation with various heat generators such as solar thermal, oil\/gas, wood or pellet boilers, as well as heat pumps, and simultaneously allows for the supply of heating circuits.\u003c\/p\u003e  \u003ch3\u003eFunction and hygiene concept\u003c\/h3\u003e  \u003cp\u003eThe stainless steel corrugated pipe wound inside the storage tank continuously heats fresh drinking water and reduces the need for domestic hot water storage, thus minimizing the risk of Legionella growth. The large surface area of ​​the stainless steel heat exchanger ensures high hot water output; a sacrificial anode is not required, making the storage tank maintenance-free.\u003c\/p\u003e  \u003ch3\u003eMaterials and workmanship\u003c\/h3\u003e  \u003cp\u003eThe tank is made of high-quality S235JRG2 steel according to DIN 4753\/EN 12897, and the domestic hot water heat exchanger is made of 1.4404 stainless steel corrugated tubing (Made in Germany). The tank has a raw interior and a primed exterior; the connections for the domestic hot water heat exchanger are located on the side.\u003c\/p\u003e  \u003ch3\u003eTechnical data\u003c\/h3\u003e  \u003cdiv class=\"se-component se-image-container __se__float-right\"\u003e  \u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/FKS_480_1560_3000_480x480.webp?v=1756205640\" alt=\"\" data-align=\"right\" data-file-name=\"FKS_480_1560_3000_480x480.webp?v=1756205640\" data-file-size=\"0\" data-origin=\",\" data-size=\",\" data-rotate=\"\" data-percentage=\"auto,auto\" style=\"margin-bottom: 16px; margin-left: 16px;\"\u003e\u003c\/figure\u003e  \u003c\/div\u003e  \u003cp\u003eOperating pressure of the tank up to max. 5 bar, operating pressure of the potable water heat exchanger up to max. 10 bar. Volume variants range from 200 to 2000 liters; models 200–400 L are equipped with one socket for an electric heating element, 600–2000 L have two sockets. An electric heating element can be easily retrofitted.\u003c\/p\u003e  \u003ch3\u003eConnections and integration\u003c\/h3\u003e  \u003cp\u003eAll connections are designed so that connected energy sources and appliances can be operated independently, thus minimizing control requirements. Additionally, no separate controller or pump is required for hot water preparation, simplifying installation.\u003c\/p\u003e  \u003ch3\u003eHeat exchanger and performance\u003c\/h3\u003e  \u003cp\u003eThe stainless steel corrugated pipe, used as a fresh water heat exchanger, offers high flow rates and efficiency due to its large surface area. An extra-large smooth-tube heat exchanger inside the tank is available for solar and heating system connections, ensuring efficient heat exchange between the heating and domestic hot water circuits.\u003c\/p\u003e  \u003ch3\u003eInsulation options\u003c\/h3\u003e  \u003cp\u003eSeveral insulation options are available: 100 mm EPS (efficiency class C), 130 mm EPS AirPor® (efficiency class B), and 150 mm PU super rigid foam (efficiency class A) for volumes of 600–1000 liters. All options have a silver-gray plastic casing with a sealing strip; the PU insulation is designed as a removable cover.\u003c\/p\u003e  \u003ch3\u003eEPS AirPor® polystyrene foam – properties\u003c\/h3\u003e  \u003cp\u003eEPS AirPor® insulation combines EPS with graphite additives for improved heat reflection, reduced heat loss, and therefore lower energy costs. It features a perfect fit, easy installation, 100% recyclability, and additional floor and lid insulation; thermal conductivity according to DIN EN 12667: 0.0316 W\/mK.\u003c\/p\u003e  \u003ch3\u003ePU super rigid foam insulation\u003c\/h3\u003e  \u003cp\u003eThe 150 mm PU super rigid foam insulation offers very good insulating properties (thermal conductivity 0.023 W\/mK), a fleece lamination to prevent convection, and a robust, removable shell with a PS casing in RAL 9006. This variant achieves energy efficiency class A and is also recyclable.\u003c\/p\u003e  \u003ch3\u003eAdvantages and operating costs\u003c\/h3\u003e  \u003cp\u003eThe combination of efficient thermal insulation, a high-quality stainless steel heat exchanger, and low water storage reduces heat loss and operating costs. EPS AirPor® can achieve up to 30% less loss compared to conventional insulation, resulting in lower energy costs and improved long-term performance.\u003c\/p\u003e  \u003ch3\u003eInstallation, maintenance and safety\u003c\/h3\u003e  \u003cp\u003eInstallation is simple: connections are self-explanatory, a pump or controller for hot water preparation is not required, and electric heating elements can be retrofitted. The absence of sacrificial anodes eliminates the need for routine anode replacement; the storage tank is therefore virtually maintenance-free.\u003c\/p\u003e  \u003ch3\u003eAreas of application\u003c\/h3\u003e  \u003cp\u003eThe FKS is universally applicable in single-family homes, multi-family dwellings, commercial buildings, and applications with combined heat sources, especially where hygienic domestic hot water preparation and flexible system integration are required. It is particularly suitable for systems with solar thermal support and multiple heat generators.\u003c\/p\u003e  \u003ch3\u003eSummary\u003c\/h3\u003e  \u003cp\u003eThe FKS fresh water hygienic combination storage tank combines hygienic fresh water technology, flexible connection options, and efficient insulation variants in a low-maintenance system. Robust materials, easy installation, and high energy efficiency make it a practical solution for modern hot water and heating systems.\u003c\/p\u003e  \u003ch3\u003eScope of delivery\u003c\/h3\u003e  \u003cul\u003e  \u003cli\u003eHygienic storage tank with 2 heat exchangers of your choice\u003c\/li\u003e  \u003cli\u003eincluding selected insulation\u003c\/li\u003e  \u003cli\u003eAssembly \u0026amp; Operating instructions\u003c\/li\u003e  \u003c\/ul\u003e","brand":"Gema GmbH","offers":[{"title":"200 liters \/ 100mm","offer_id":55327418024284,"sku":"FKS200+SISOC","price":1374.0,"currency_code":"EUR","in_stock":true},{"title":"200 liters \/ 130mm","offer_id":55327418057052,"sku":"FKS200+SISOB","price":1557.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 100mm","offer_id":55327418122588,"sku":"FKS300+SISOC","price":1424.0,"currency_code":"EUR","in_stock":true},{"title":"300 liters \/ 130mm","offer_id":55327418155356,"sku":"FKS300+SISOB","price":1607.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 100mm","offer_id":55327418220892,"sku":"FKS400+SISOC","price":1474.0,"currency_code":"EUR","in_stock":true},{"title":"400 liters \/ 130mm","offer_id":55327418253660,"sku":"FKS400+SISOB","price":1657.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 100mm","offer_id":55327418319196,"sku":"FKS600+SISOC","price":1524.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 130mm","offer_id":55327418351964,"sku":"FKS600+SISOB","price":1707.0,"currency_code":"EUR","in_stock":true},{"title":"600 liters \/ 150mm","offer_id":55327418384732,"sku":"FKS600+SISOA","price":1876.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 100mm","offer_id":55327418417500,"sku":"FKS800+SISOC","price":1554.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 130mm","offer_id":55327418450268,"sku":"FKS800+SISOB","price":1737.0,"currency_code":"EUR","in_stock":true},{"title":"800 liters \/ 150mm","offer_id":55327418483036,"sku":"FKS800+SISOA","price":1906.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 100mm","offer_id":55327418515804,"sku":"FKS1000+SISOC","price":1624.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 130mm","offer_id":55327418548572,"sku":"FKS1000+SISOB","price":1807.0,"currency_code":"EUR","in_stock":true},{"title":"1000 liters \/ 150mm","offer_id":55327418581340,"sku":"FKS1000+SISOA","price":1976.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 100mm","offer_id":55327418614108,"sku":"FKS1500+SISOC","price":2054.0,"currency_code":"EUR","in_stock":true},{"title":"1500 liters \/ 130mm","offer_id":55327418646876,"sku":"FKS1500+SISOB","price":2237.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 100mm","offer_id":55327418712412,"sku":"FKS2000+SISOC","price":2434.0,"currency_code":"EUR","in_stock":true},{"title":"2000 liters \/ 130mm","offer_id":55327418745180,"sku":"FKS2000+SISOB","price":2617.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/7796\/6428\/files\/schichten-pufferspeicher-mit-2-warmetauscher-5468097.webp?v=1770692066","url":"https:\/\/gemashop.de\/en\/products\/hygiene-storage-with-2-heat-exchangers","provider":"GEMA Shop","version":"1.0","type":"link"}